diff options
Diffstat (limited to 'BaseTools/Source/C/GenFw/Elf64Convert.c')
| -rw-r--r-- | BaseTools/Source/C/GenFw/Elf64Convert.c | 785 |
1 files changed, 785 insertions, 0 deletions
diff --git a/BaseTools/Source/C/GenFw/Elf64Convert.c b/BaseTools/Source/C/GenFw/Elf64Convert.c new file mode 100644 index 0000000000..7c2e87e68b --- /dev/null +++ b/BaseTools/Source/C/GenFw/Elf64Convert.c @@ -0,0 +1,785 @@ +/** @file + +Copyright (c) 2010, Intel Corporation. All rights reserved.<BR> + +This program and the accompanying materials are licensed and made available +under the terms and conditions of the BSD License which accompanies this +distribution. The full text of the license may be found at +http://opensource.org/licenses/bsd-license.php + +THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS, +WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED. + +**/ + +#include "WinNtInclude.h" + +#ifndef __GNUC__ +#include <windows.h> +#include <io.h> +#endif +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#include <time.h> +#include <ctype.h> + +#include <Common/UefiBaseTypes.h> +#include <IndustryStandard/PeImage.h> + +#include "PeCoffLib.h" +#include "EfiUtilityMsgs.h" + +#include "GenFw.h" +#include "ElfConvert.h" +#include "Elf64Convert.h" + +STATIC +VOID +ScanSections64 ( + VOID + ); + +STATIC +BOOLEAN +WriteSections64 ( + SECTION_FILTER_TYPES FilterType + ); + +STATIC +VOID +WriteRelocations64 ( + VOID + ); + +STATIC +VOID +WriteDebug64 ( + VOID + ); + +STATIC +VOID +SetImageSize64 ( + VOID + ); + +STATIC +VOID +CleanUp64 ( + VOID + ); + +// +// Rename ELF32 strucutres to common names to help when porting to ELF64. +// +typedef Elf64_Shdr Elf_Shdr; +typedef Elf64_Ehdr Elf_Ehdr; +typedef Elf64_Rel Elf_Rel; +typedef Elf64_Rela Elf_Rela; +typedef Elf64_Sym Elf_Sym; +typedef Elf64_Phdr Elf_Phdr; +typedef Elf64_Dyn Elf_Dyn; +#define ELFCLASS ELFCLASS64 +#define ELF_R_TYPE(r) ELF64_R_TYPE(r) +#define ELF_R_SYM(r) ELF64_R_SYM(r) + +// +// Well known ELF structures. +// +STATIC Elf_Ehdr *mEhdr; +STATIC Elf_Shdr *mShdrBase; +STATIC Elf_Phdr *mPhdrBase; + +// +// Coff information +// +STATIC const UINT32 mCoffAlignment = 0x20; + +// +// PE section alignment. +// +STATIC const UINT16 mCoffNbrSections = 5; + +// +// ELF sections to offset in Coff file. +// +STATIC UINT32 *mCoffSectionsOffset = NULL; + +// +// Offsets in COFF file +// +STATIC UINT32 mNtHdrOffset; +STATIC UINT32 mTextOffset; +STATIC UINT32 mDataOffset; +STATIC UINT32 mHiiRsrcOffset; +STATIC UINT32 mRelocOffset; + +// +// Initialization Function +// +BOOLEAN +InitializeElf64 ( + UINT8 *FileBuffer, + ELF_FUNCTION_TABLE *ElfFunctions + ) +{ + // + // Initialize data pointer and structures. + // + VerboseMsg ("Set EHDR"); + mEhdr = (Elf_Ehdr*) FileBuffer; + + // + // Check the ELF64 specific header information. + // + VerboseMsg ("Check ELF64 Header Information"); + if (mEhdr->e_ident[EI_CLASS] != ELFCLASS64) { + Error (NULL, 0, 3000, "Unsupported", "ELF EI_DATA not ELFCLASS64"); + return FALSE; + } + if (mEhdr->e_ident[EI_DATA] != ELFDATA2LSB) { + Error (NULL, 0, 3000, "Unsupported", "ELF EI_DATA not ELFDATA2LSB"); + return FALSE; + } + if ((mEhdr->e_type != ET_EXEC) && (mEhdr->e_type != ET_DYN)) { + Error (NULL, 0, 3000, "Unsupported", "ELF e_type not ET_EXEC or ET_DYN"); + return FALSE; + } + if (!((mEhdr->e_machine == EM_X86_64))) { + Error (NULL, 0, 3000, "Unsupported", "ELF e_machine not EM_X86_64"); + return FALSE; + } + if (mEhdr->e_version != EV_CURRENT) { + Error (NULL, 0, 3000, "Unsupported", "ELF e_version (%u) not EV_CURRENT (%d)", (unsigned) mEhdr->e_version, EV_CURRENT); + return FALSE; + } + + // + // Update section header pointers + // + VerboseMsg ("Update Header Pointers"); + mShdrBase = (Elf_Shdr *)((UINT8 *)mEhdr + mEhdr->e_shoff); + mPhdrBase = (Elf_Phdr *)((UINT8 *)mEhdr + mEhdr->e_phoff); + + // + // Create COFF Section offset buffer and zero. + // + VerboseMsg ("Create COFF Section Offset Buffer"); + mCoffSectionsOffset = (UINT32 *)malloc(mEhdr->e_shnum * sizeof (UINT32)); + memset(mCoffSectionsOffset, 0, mEhdr->e_shnum * sizeof(UINT32)); + + // + // Fill in function pointers. + // + VerboseMsg ("Fill in Function Pointers"); + ElfFunctions->ScanSections = ScanSections64; + ElfFunctions->WriteSections = WriteSections64; + ElfFunctions->WriteRelocations = WriteRelocations64; + ElfFunctions->WriteDebug = WriteDebug64; + ElfFunctions->SetImageSize = SetImageSize64; + ElfFunctions->CleanUp = CleanUp64; + + return TRUE; +} + + +// +// Header by Index functions +// +STATIC +Elf_Shdr* +GetShdrByIndex ( + UINT32 Num + ) +{ + if (Num >= mEhdr->e_shnum) + return NULL; + return (Elf_Shdr*)((UINT8*)mShdrBase + Num * mEhdr->e_shentsize); +} + +STATIC +UINT32 +CoffAlign ( + UINT32 Offset + ) +{ + return (Offset + mCoffAlignment - 1) & ~(mCoffAlignment - 1); +} + +// +// filter functions +// +STATIC +BOOLEAN +IsTextShdr ( + Elf_Shdr *Shdr + ) +{ + return (BOOLEAN) ((Shdr->sh_flags & (SHF_WRITE | SHF_ALLOC)) == SHF_ALLOC); +} + +STATIC +BOOLEAN +IsHiiRsrcShdr ( + Elf_Shdr *Shdr + ) +{ + Elf_Shdr *Namedr = GetShdrByIndex(mEhdr->e_shstrndx); + + return (BOOLEAN) (strcmp((CHAR8*)mEhdr + Namedr->sh_offset + Shdr->sh_name, ELF_HII_SECTION_NAME) == 0); +} + +STATIC +BOOLEAN +IsDataShdr ( + Elf_Shdr *Shdr + ) +{ + if (IsHiiRsrcShdr(Shdr)) { + return FALSE; + } + return (BOOLEAN) (Shdr->sh_flags & (SHF_WRITE | SHF_ALLOC)) == (SHF_ALLOC | SHF_WRITE); +} + +// +// Elf functions interface implementation +// + +STATIC +VOID +ScanSections64 ( + VOID + ) +{ + UINT32 i; + EFI_IMAGE_DOS_HEADER *DosHdr; + EFI_IMAGE_OPTIONAL_HEADER_UNION *NtHdr; + UINT32 CoffEntry; + + CoffEntry = 0; + mCoffOffset = 0; + + // + // Coff file start with a DOS header. + // + mCoffOffset = sizeof(EFI_IMAGE_DOS_HEADER) + 0x40; + mNtHdrOffset = mCoffOffset; + switch (mEhdr->e_machine) { + case EM_X86_64: + case EM_IA_64: + mCoffOffset += sizeof (EFI_IMAGE_NT_HEADERS64); + break; + default: + VerboseMsg ("%s unknown e_machine type. Assume X64", (UINTN)mEhdr->e_machine); + mCoffOffset += sizeof (EFI_IMAGE_NT_HEADERS64); + break; + } + + mTableOffset = mCoffOffset; + mCoffOffset += mCoffNbrSections * sizeof(EFI_IMAGE_SECTION_HEADER); + + // + // First text sections. + // + mCoffOffset = CoffAlign(mCoffOffset); + mTextOffset = mCoffOffset; + for (i = 0; i < mEhdr->e_shnum; i++) { + Elf_Shdr *shdr = GetShdrByIndex(i); + if (IsTextShdr(shdr)) { + if ((shdr->sh_addralign != 0) && (shdr->sh_addralign != 1)) { + // the alignment field is valid + if ((shdr->sh_addr & (shdr->sh_addralign - 1)) == 0) { + // if the section address is aligned we must align PE/COFF + mCoffOffset = (UINT32) ((mCoffOffset + shdr->sh_addralign - 1) & ~(shdr->sh_addralign - 1)); + } else if ((shdr->sh_addr % shdr->sh_addralign) != (mCoffOffset % shdr->sh_addralign)) { + // ARM RVCT tools have behavior outside of the ELF specification to try + // and make images smaller. If sh_addr is not aligned to sh_addralign + // then the section needs to preserve sh_addr MOD sh_addralign. + // Normally doing nothing here works great. + Error (NULL, 0, 3000, "Invalid", "Unsupported section alignment."); + } + } + + /* Relocate entry. */ + if ((mEhdr->e_entry >= shdr->sh_addr) && + (mEhdr->e_entry < shdr->sh_addr + shdr->sh_size)) { + CoffEntry = (UINT32) (mCoffOffset + mEhdr->e_entry - shdr->sh_addr); + } + mCoffSectionsOffset[i] = mCoffOffset; + mCoffOffset += (UINT32) shdr->sh_size; + } + } + + if (mEhdr->e_machine != EM_ARM) { + mCoffOffset = CoffAlign(mCoffOffset); + } + + // + // Then data sections. + // + mDataOffset = mCoffOffset; + for (i = 0; i < mEhdr->e_shnum; i++) { + Elf_Shdr *shdr = GetShdrByIndex(i); + if (IsDataShdr(shdr)) { + if ((shdr->sh_addralign != 0) && (shdr->sh_addralign != 1)) { + // the alignment field is valid + if ((shdr->sh_addr & (shdr->sh_addralign - 1)) == 0) { + // if the section address is aligned we must align PE/COFF + mCoffOffset = (UINT32) ((mCoffOffset + shdr->sh_addralign - 1) & ~(shdr->sh_addralign - 1)); + } else if ((shdr->sh_addr % shdr->sh_addralign) != (mCoffOffset % shdr->sh_addralign)) { + // ARM RVCT tools have behavior outside of the ELF specification to try + // and make images smaller. If sh_addr is not aligned to sh_addralign + // then the section needs to preserve sh_addr MOD sh_addralign. + // Normally doing nothing here works great. + Error (NULL, 0, 3000, "Invalid", "Unsupported section alignment."); + } + } + mCoffSectionsOffset[i] = mCoffOffset; + mCoffOffset += (UINT32) shdr->sh_size; + } + } + mCoffOffset = CoffAlign(mCoffOffset); + + // + // The HII resource sections. + // + mHiiRsrcOffset = mCoffOffset; + for (i = 0; i < mEhdr->e_shnum; i++) { + Elf_Shdr *shdr = GetShdrByIndex(i); + if (IsHiiRsrcShdr(shdr)) { + if ((shdr->sh_addralign != 0) && (shdr->sh_addralign != 1)) { + // the alignment field is valid + if ((shdr->sh_addr & (shdr->sh_addralign - 1)) == 0) { + // if the section address is aligned we must align PE/COFF + mCoffOffset = (UINT32) ((mCoffOffset + shdr->sh_addralign - 1) & ~(shdr->sh_addralign - 1)); + } else if ((shdr->sh_addr % shdr->sh_addralign) != (mCoffOffset % shdr->sh_addralign)) { + // ARM RVCT tools have behavior outside of the ELF specification to try + // and make images smaller. If sh_addr is not aligned to sh_addralign + // then the section needs to preserve sh_addr MOD sh_addralign. + // Normally doing nothing here works great. + Error (NULL, 0, 3000, "Invalid", "Unsupported section alignment."); + } + } + if (shdr->sh_size != 0) { + mCoffSectionsOffset[i] = mCoffOffset; + mCoffOffset += (UINT32) shdr->sh_size; + mCoffOffset = CoffAlign(mCoffOffset); + SetHiiResourceHeader ((UINT8*) mEhdr + shdr->sh_offset, mHiiRsrcOffset); + } + break; + } + } + + mRelocOffset = mCoffOffset; + + // + // Allocate base Coff file. Will be expanded later for relocations. + // + mCoffFile = (UINT8 *)malloc(mCoffOffset); + memset(mCoffFile, 0, mCoffOffset); + + // + // Fill headers. + // + DosHdr = (EFI_IMAGE_DOS_HEADER *)mCoffFile; + DosHdr->e_magic = EFI_IMAGE_DOS_SIGNATURE; + DosHdr->e_lfanew = mNtHdrOffset; + + NtHdr = (EFI_IMAGE_OPTIONAL_HEADER_UNION*)(mCoffFile + mNtHdrOffset); + + NtHdr->Pe32Plus.Signature = EFI_IMAGE_NT_SIGNATURE; + + switch (mEhdr->e_machine) { + case EM_X86_64: + NtHdr->Pe32Plus.FileHeader.Machine = EFI_IMAGE_MACHINE_X64; + NtHdr->Pe32Plus.OptionalHeader.Magic = EFI_IMAGE_NT_OPTIONAL_HDR64_MAGIC; + break; + case EM_IA_64: + NtHdr->Pe32Plus.FileHeader.Machine = EFI_IMAGE_MACHINE_IPF; + NtHdr->Pe32Plus.OptionalHeader.Magic = EFI_IMAGE_NT_OPTIONAL_HDR64_MAGIC; + break; + default: + VerboseMsg ("%s unknown e_machine type. Assume X64", (UINTN)mEhdr->e_machine); + NtHdr->Pe32Plus.FileHeader.Machine = EFI_IMAGE_MACHINE_X64; + NtHdr->Pe32Plus.OptionalHeader.Magic = EFI_IMAGE_NT_OPTIONAL_HDR64_MAGIC; + } + + NtHdr->Pe32Plus.FileHeader.NumberOfSections = mCoffNbrSections; + NtHdr->Pe32Plus.FileHeader.TimeDateStamp = (UINT32) time(NULL); + mImageTimeStamp = NtHdr->Pe32Plus.FileHeader.TimeDateStamp; + NtHdr->Pe32Plus.FileHeader.PointerToSymbolTable = 0; + NtHdr->Pe32Plus.FileHeader.NumberOfSymbols = 0; + NtHdr->Pe32Plus.FileHeader.SizeOfOptionalHeader = sizeof(NtHdr->Pe32Plus.OptionalHeader); + NtHdr->Pe32Plus.FileHeader.Characteristics = EFI_IMAGE_FILE_EXECUTABLE_IMAGE + | EFI_IMAGE_FILE_LINE_NUMS_STRIPPED + | EFI_IMAGE_FILE_LOCAL_SYMS_STRIPPED + | EFI_IMAGE_FILE_LARGE_ADDRESS_AWARE; + + NtHdr->Pe32Plus.OptionalHeader.SizeOfCode = mDataOffset - mTextOffset; + NtHdr->Pe32Plus.OptionalHeader.SizeOfInitializedData = mRelocOffset - mDataOffset; + NtHdr->Pe32Plus.OptionalHeader.SizeOfUninitializedData = 0; + NtHdr->Pe32Plus.OptionalHeader.AddressOfEntryPoint = CoffEntry; + + NtHdr->Pe32Plus.OptionalHeader.BaseOfCode = mTextOffset; + + NtHdr->Pe32Plus.OptionalHeader.ImageBase = 0; + NtHdr->Pe32Plus.OptionalHeader.SectionAlignment = mCoffAlignment; + NtHdr->Pe32Plus.OptionalHeader.FileAlignment = mCoffAlignment; + NtHdr->Pe32Plus.OptionalHeader.SizeOfImage = 0; + + NtHdr->Pe32Plus.OptionalHeader.SizeOfHeaders = mTextOffset; + NtHdr->Pe32Plus.OptionalHeader.NumberOfRvaAndSizes = EFI_IMAGE_NUMBER_OF_DIRECTORY_ENTRIES; + + // + // Section headers. + // + if ((mDataOffset - mTextOffset) > 0) { + CreateSectionHeader (".text", mTextOffset, mDataOffset - mTextOffset, + EFI_IMAGE_SCN_CNT_CODE + | EFI_IMAGE_SCN_MEM_EXECUTE + | EFI_IMAGE_SCN_MEM_READ); + } else { + // Don't make a section of size 0. + NtHdr->Pe32Plus.FileHeader.NumberOfSections--; + } + + if ((mHiiRsrcOffset - mDataOffset) > 0) { + CreateSectionHeader (".data", mDataOffset, mHiiRsrcOffset - mDataOffset, + EFI_IMAGE_SCN_CNT_INITIALIZED_DATA + | EFI_IMAGE_SCN_MEM_WRITE + | EFI_IMAGE_SCN_MEM_READ); + } else { + // Don't make a section of size 0. + NtHdr->Pe32Plus.FileHeader.NumberOfSections--; + } + + if ((mRelocOffset - mHiiRsrcOffset) > 0) { + CreateSectionHeader (".rsrc", mHiiRsrcOffset, mRelocOffset - mHiiRsrcOffset, + EFI_IMAGE_SCN_CNT_INITIALIZED_DATA + | EFI_IMAGE_SCN_MEM_READ); + + NtHdr->Pe32Plus.OptionalHeader.DataDirectory[EFI_IMAGE_DIRECTORY_ENTRY_RESOURCE].Size = mRelocOffset - mHiiRsrcOffset; + NtHdr->Pe32Plus.OptionalHeader.DataDirectory[EFI_IMAGE_DIRECTORY_ENTRY_RESOURCE].VirtualAddress = mHiiRsrcOffset; + } else { + // Don't make a section of size 0. + NtHdr->Pe32Plus.FileHeader.NumberOfSections--; + } + +} + +STATIC +BOOLEAN +WriteSections64 ( + SECTION_FILTER_TYPES FilterType + ) +{ + UINT32 Idx; + Elf_Shdr *SecShdr; + UINT32 SecOffset; + BOOLEAN (*Filter)(Elf_Shdr *); + + // + // Initialize filter pointer + // + switch (FilterType) { + case SECTION_TEXT: + Filter = IsTextShdr; + break; + case SECTION_HII: + Filter = IsHiiRsrcShdr; + break; + case SECTION_DATA: + Filter = IsDataShdr; + break; + default: + return FALSE; + } + + // + // First: copy sections. + // + for (Idx = 0; Idx < mEhdr->e_shnum; Idx++) { + Elf_Shdr *Shdr = GetShdrByIndex(Idx); + if ((*Filter)(Shdr)) { + switch (Shdr->sh_type) { + case SHT_PROGBITS: + /* Copy. */ + memcpy(mCoffFile + mCoffSectionsOffset[Idx], + (UINT8*)mEhdr + Shdr->sh_offset, + (size_t) Shdr->sh_size); + break; + + case SHT_NOBITS: + memset(mCoffFile + mCoffSectionsOffset[Idx], 0, (size_t) Shdr->sh_size); + break; + + default: + // + // Ignore for unkown section type. + // + VerboseMsg ("%s unknown section type %x. We directly copy this section into Coff file", mInImageName, (unsigned)Shdr->sh_type); + break; + } + } + } + + // + // Second: apply relocations. + // + VerboseMsg ("Applying Relocations..."); + for (Idx = 0; Idx < mEhdr->e_shnum; Idx++) { + Elf_Shdr *RelShdr = GetShdrByIndex(Idx); + if ((RelShdr->sh_type != SHT_REL) && (RelShdr->sh_type != SHT_RELA)) { + continue; + } + SecShdr = GetShdrByIndex(RelShdr->sh_info); + SecOffset = mCoffSectionsOffset[RelShdr->sh_info]; + if (RelShdr->sh_type == SHT_RELA && (*Filter)(SecShdr)) { + UINT64 RelIdx; + Elf_Shdr *SymtabShdr = GetShdrByIndex(RelShdr->sh_link); + UINT8 *Symtab = (UINT8*)mEhdr + SymtabShdr->sh_offset; + for (RelIdx = 0; RelIdx < RelShdr->sh_size; RelIdx += (UINT32) RelShdr->sh_entsize) { + Elf_Rela *Rel = (Elf_Rela *)((UINT8*)mEhdr + RelShdr->sh_offset + RelIdx); + Elf_Sym *Sym = (Elf_Sym *)(Symtab + ELF_R_SYM(Rel->r_info) * SymtabShdr->sh_entsize); + Elf_Shdr *SymShdr; + UINT8 *Targ; + + if (Sym->st_shndx == SHN_UNDEF + || Sym->st_shndx == SHN_ABS + || Sym->st_shndx > mEhdr->e_shnum) { + Error (NULL, 0, 3000, "Invalid", "%s bad symbol definition.", mInImageName); + } + SymShdr = GetShdrByIndex(Sym->st_shndx); + + // + // Note: r_offset in a memory address. + // Convert it to a pointer in the coff file. + // + Targ = mCoffFile + SecOffset + (Rel->r_offset - SecShdr->sh_addr); + + if (mEhdr->e_machine == EM_X86_64) { + switch (ELF_R_TYPE(Rel->r_info)) { + case R_X86_64_NONE: + break; + case R_X86_64_64: + // + // Absolute relocation. + // + VerboseMsg ("R_X86_64_64"); + VerboseMsg ("Offset: 0x%08X, Addend: 0x%016LX", + (UINT32)(SecOffset + (Rel->r_offset - SecShdr->sh_addr)), + *(UINT64 *)Targ); + *(UINT64 *)Targ = *(UINT64 *)Targ - SymShdr->sh_addr + mCoffSectionsOffset[Sym->st_shndx]; + VerboseMsg ("Relocation: 0x%016LX", *(UINT64*)Targ); + break; + case R_X86_64_32: + VerboseMsg ("R_X86_64_32"); + VerboseMsg ("Offset: 0x%08X, Addend: 0x%08X", + (UINT32)(SecOffset + (Rel->r_offset - SecShdr->sh_addr)), + *(UINT32 *)Targ); + *(UINT32 *)Targ = (UINT32)((UINT64)(*(UINT32 *)Targ) - SymShdr->sh_addr + mCoffSectionsOffset[Sym->st_shndx]); + VerboseMsg ("Relocation: 0x%08X", *(UINT32*)Targ); + break; + case R_X86_64_32S: + VerboseMsg ("R_X86_64_32S"); + VerboseMsg ("Offset: 0x%08X, Addend: 0x%08X", + (UINT32)(SecOffset + (Rel->r_offset - SecShdr->sh_addr)), + *(UINT32 *)Targ); + *(INT32 *)Targ = (INT32)((INT64)(*(INT32 *)Targ) - SymShdr->sh_addr + mCoffSectionsOffset[Sym->st_shndx]); + VerboseMsg ("Relocation: 0x%08X", *(UINT32*)Targ); + break; + case R_X86_64_PC32: + // + // Relative relocation: Symbol - Ip + Addend + // + VerboseMsg ("R_X86_64_PC32"); + VerboseMsg ("Offset: 0x%08X, Addend: 0x%08X", + (UINT32)(SecOffset + (Rel->r_offset - SecShdr->sh_addr)), + *(UINT32 *)Targ); + *(UINT32 *)Targ = (UINT32) (*(UINT32 *)Targ + + (mCoffSectionsOffset[Sym->st_shndx] - SymShdr->sh_addr) + - (SecOffset - SecShdr->sh_addr)); + VerboseMsg ("Relocation: 0x%08X", *(UINT32 *)Targ); + break; + default: + Error (NULL, 0, 3000, "Invalid", "%s unsupported ELF EM_X86_64 relocation 0x%x.", mInImageName, (unsigned) ELF_R_TYPE(Rel->r_info)); + } + } else { + Error (NULL, 0, 3000, "Invalid", "Not EM_X86_X64"); + } + } + } + } + + return TRUE; +} + +STATIC +VOID +WriteRelocations64 ( + VOID + ) +{ + UINT32 Index; + EFI_IMAGE_OPTIONAL_HEADER_UNION *NtHdr; + EFI_IMAGE_DATA_DIRECTORY *Dir; + BOOLEAN FoundRelocations; + Elf_Sym *Sym; + Elf_Shdr *SymtabShdr; + UINT8 *Symtab; + + + for (Index = 0, FoundRelocations = FALSE; Index < mEhdr->e_shnum; Index++) { + Elf_Shdr *RelShdr = GetShdrByIndex(Index); + if ((RelShdr->sh_type == SHT_REL) || (RelShdr->sh_type == SHT_RELA)) { + Elf_Shdr *SecShdr = GetShdrByIndex (RelShdr->sh_info); + if (IsTextShdr(SecShdr) || IsDataShdr(SecShdr)) { + UINT64 RelIdx; + + SymtabShdr = GetShdrByIndex (RelShdr->sh_link); + Symtab = (UINT8*)mEhdr + SymtabShdr->sh_offset; + FoundRelocations = TRUE; + for (RelIdx = 0; RelIdx < RelShdr->sh_size; RelIdx += RelShdr->sh_entsize) { + Elf_Rela *Rel = (Elf_Rela *)((UINT8*)mEhdr + RelShdr->sh_offset + RelIdx); + Elf_Shdr *SymShdr; + + Sym = (Elf_Sym *)(Symtab + ELF_R_SYM(Rel->r_info) * SymtabShdr->sh_entsize); + SymShdr = GetShdrByIndex (Sym->st_shndx); + + if (mEhdr->e_machine == EM_X86_64) { + switch (ELF_R_TYPE(Rel->r_info)) { + case R_X86_64_NONE: + case R_X86_64_PC32: + break; + case R_X86_64_64: + VerboseMsg ("EFI_IMAGE_REL_BASED_DIR64 Offset: 0x%08X", + mCoffSectionsOffset[RelShdr->sh_info] + (Rel->r_offset - SecShdr->sh_addr)); + CoffAddFixup( + (UINT32) ((UINT64) mCoffSectionsOffset[RelShdr->sh_info] + + (Rel->r_offset - SecShdr->sh_addr)), + EFI_IMAGE_REL_BASED_DIR64); + break; + case R_X86_64_32S: + case R_X86_64_32: + VerboseMsg ("EFI_IMAGE_REL_BASED_HIGHLOW Offset: 0x%08X", + mCoffSectionsOffset[RelShdr->sh_info] + (Rel->r_offset - SecShdr->sh_addr)); + CoffAddFixup( + (UINT32) ((UINT64) mCoffSectionsOffset[RelShdr->sh_info] + + (Rel->r_offset - SecShdr->sh_addr)), + EFI_IMAGE_REL_BASED_HIGHLOW); + break; + default: + Error (NULL, 0, 3000, "Invalid", "%s unsupported ELF EM_X86_64 relocation 0x%x.", mInImageName, (unsigned) ELF_R_TYPE(Rel->r_info)); + } + } else { + Error (NULL, 0, 3000, "Not Supported", "This tool does not support relocations for ELF with e_machine %u (processor type).", (unsigned) mEhdr->e_machine); + } + } + } + } + } + + // + // Pad by adding empty entries. + // + while (mCoffOffset & (mCoffAlignment - 1)) { + CoffAddFixupEntry(0); + } + + NtHdr = (EFI_IMAGE_OPTIONAL_HEADER_UNION *)(mCoffFile + mNtHdrOffset); + Dir = &NtHdr->Pe32Plus.OptionalHeader.DataDirectory[EFI_IMAGE_DIRECTORY_ENTRY_BASERELOC]; + Dir->Size = mCoffOffset - mRelocOffset; + if (Dir->Size == 0) { + // If no relocations, null out the directory entry and don't add the .reloc section + Dir->VirtualAddress = 0; + NtHdr->Pe32Plus.FileHeader.NumberOfSections--; + } else { + Dir->VirtualAddress = mRelocOffset; + CreateSectionHeader (".reloc", mRelocOffset, mCoffOffset - mRelocOffset, + EFI_IMAGE_SCN_CNT_INITIALIZED_DATA + | EFI_IMAGE_SCN_MEM_DISCARDABLE + | EFI_IMAGE_SCN_MEM_READ); + } +} + +STATIC +VOID +WriteDebug64 ( + VOID + ) +{ + UINT32 Len; + UINT32 DebugOffset; + EFI_IMAGE_OPTIONAL_HEADER_UNION *NtHdr; + EFI_IMAGE_DATA_DIRECTORY *DataDir; + EFI_IMAGE_DEBUG_DIRECTORY_ENTRY *Dir; + EFI_IMAGE_DEBUG_CODEVIEW_NB10_ENTRY *Nb10; + + Len = strlen(mInImageName) + 1; + DebugOffset = mCoffOffset; + + mCoffOffset += sizeof(EFI_IMAGE_DEBUG_DIRECTORY_ENTRY) + + sizeof(EFI_IMAGE_DEBUG_CODEVIEW_NB10_ENTRY) + + Len; + mCoffOffset = CoffAlign(mCoffOffset); + + mCoffFile = realloc(mCoffFile, mCoffOffset); + memset(mCoffFile + DebugOffset, 0, mCoffOffset - DebugOffset); + + Dir = (EFI_IMAGE_DEBUG_DIRECTORY_ENTRY*)(mCoffFile + DebugOffset); + Dir->Type = EFI_IMAGE_DEBUG_TYPE_CODEVIEW; + Dir->SizeOfData = sizeof(EFI_IMAGE_DEBUG_CODEVIEW_NB10_ENTRY) + Len; + Dir->RVA = DebugOffset + sizeof(EFI_IMAGE_DEBUG_DIRECTORY_ENTRY); + Dir->FileOffset = DebugOffset + sizeof(EFI_IMAGE_DEBUG_DIRECTORY_ENTRY); + + Nb10 = (EFI_IMAGE_DEBUG_CODEVIEW_NB10_ENTRY*)(Dir + 1); + Nb10->Signature = CODEVIEW_SIGNATURE_NB10; + strcpy ((char *)(Nb10 + 1), mInImageName); + + + NtHdr = (EFI_IMAGE_OPTIONAL_HEADER_UNION *)(mCoffFile + mNtHdrOffset); + DataDir = &NtHdr->Pe32Plus.OptionalHeader.DataDirectory[EFI_IMAGE_DIRECTORY_ENTRY_DEBUG]; + DataDir->VirtualAddress = DebugOffset; + DataDir->Size = mCoffOffset - DebugOffset; + if (DataDir->Size == 0) { + // If no debug, null out the directory entry and don't add the .debug section + DataDir->VirtualAddress = 0; + NtHdr->Pe32Plus.FileHeader.NumberOfSections--; + } else { + DataDir->VirtualAddress = DebugOffset; + CreateSectionHeader (".debug", DebugOffset, mCoffOffset - DebugOffset, + EFI_IMAGE_SCN_CNT_INITIALIZED_DATA + | EFI_IMAGE_SCN_MEM_DISCARDABLE + | EFI_IMAGE_SCN_MEM_READ); + + } +} + +STATIC +VOID +SetImageSize64 ( + VOID + ) +{ + EFI_IMAGE_OPTIONAL_HEADER_UNION *NtHdr; + + // + // Set image size + // + NtHdr = (EFI_IMAGE_OPTIONAL_HEADER_UNION *)(mCoffFile + mNtHdrOffset); + NtHdr->Pe32Plus.OptionalHeader.SizeOfImage = mCoffOffset; +} + +STATIC +VOID +CleanUp64 ( + VOID + ) +{ + if (mCoffSectionsOffset != NULL) { + free (mCoffSectionsOffset); + } +} + + |